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Pluto Surface Observations 2: NH Post-Encounter Phase, 10 Oct 2015- 1 Feb 2016
Habukaz
post Oct 18 2015, 01:20 PM
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Interesting comparison by Phil Metzger between clouds on Earth and ices on Sputnik. Especially the right image there (and other parts of the most recent mosaic) suggest how topography under Sputnik might affect what the surface looks like.


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Gladstoner
post Oct 18 2015, 04:03 PM
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QUOTE (Habukaz @ Oct 18 2015, 08:20 AM) *
Interesting comparison by Phil Metzger between clouds on Earth and ices on Sputnik. Especially the right image there (and other parts of the most recent mosaic) suggest how topography under Sputnik might affect what the surface looks like.

And I thought the 'frozen clouds' in the movie 'Interstellar' were far-fetched. Pluto seems to have an answer for everything. smile.gif
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Bill Harris
post Oct 18 2015, 11:26 PM
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QUOTE (machi @ Oct 17 2015, 07:10 AM) *
It's also very difficult to explains existence of dunes on the body with such low atmospheric pressure.


Not really. Aeolian processes on the Pluto system are easier to explain than dust ripples on the surface of Comet 67P/C-G, which has little sensible atmosphere and very low gravity. These are strange worlds and strange times with so many phenomena in search of explanation.

--Bill


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stfletch
post Oct 19 2015, 08:10 AM
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Updated file tracking received and expected LORRI and RALPH images...
Attached File(s)
Attached File  Pluto_Flyby_Observations_List_2.pdf ( 39.04K ) Number of downloads: 863
 
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HSchirmer
post Oct 20 2015, 11:04 AM
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QUOTE (Gladstoner @ Oct 18 2015, 05:03 PM) *
And I thought the 'frozen clouds' in the movie 'Interstellar' were far-fetched. Pluto seems to have an answer for everything. smile.gif


Well, here's sort-of-the-opposite, in some parts of antartica the icy surface just disappears into the wind...

However, the new study shows that in certain parts, called scour zones, some 90 percent—an estimated 80 billion tons per year—is instead being vaporized...

So Pluto topography might cause chinook winds, adiabatic downslope winds, known as snow-eaters....
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ZLD
post Oct 22 2015, 08:21 PM
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Looks like stereo imaging is starting to be assembled. Story

Below is a flicker animation for those without glasses.
Attached Image


I might do a tween on this to see if it reveals anything but I don't expect that it would. Differences are pretty small.

Nonetheless, and if feels cliche and beaten to death to say, but if Pluto couldn't get more bizarre, those craters are fantastically deep bowl shapes.


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fredk
post Oct 22 2015, 09:25 PM
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QUOTE (ZLD @ Oct 22 2015, 09:21 PM) *
fantastically deep bowl shapes

It's impossible to know how deep the craters are without knowing the difference in viewpoints between the two frames. This is a well-known feature of anaglyphs - the apparent depth of features depends on how far apart the two frames were taken. (And also on factors such as how close you are to the computer display when you view it.)

It looks like the frames have been geometrically distorted so that they match over most of the surface, ie so that most of the surface appears flat in the stereo views. You should look at the original frames to get a sense of how far apart they were taken (or better, calculate it based on the metadata). That would allow you to actually measure the depths of the craters.
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ZLD
post Oct 22 2015, 09:27 PM
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I was going by visual appearance along with the reported 'up to 1.3 miles (2.1 km) deep', according to the article I linked.


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ngunn
post Oct 22 2015, 10:01 PM
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QUOTE (ZLD @ Oct 22 2015, 09:21 PM) *
those craters are fantastically deep bowl shapes.


It's always difficult to say when viewing an anaglyph how much it exaggerates the vertical dimension, but I think it is true to say these craters reach their full depth remarkably close to their rims. They are more like cylindrical pits than bowls. I don't doubt they started off as normal impact craters but something - perhaps preferential mass wasting of the deeper layers - has modified their shape.

Pluto is a world that is eroding away the whole time. Old surface will aquire a protective husk but anything newly exposed will be particularly vulnerable to mass wasting.
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ZLD
post Oct 22 2015, 10:31 PM
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It was a simple observation that was based not on the anaglyph, but the flicker animation which works much better for viewing visible differences, for me at least.

Heres a very small crop of the tween I'm working on.



It may just be due to strange geometric distortions introduced as suggested, but if not, there would seem to be a pretty large amount of relief here. The crater at the lower right, also moves and behaves as if it was fairly bowl-like in shape.


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walfy
post Oct 22 2015, 10:40 PM
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The above GIF for 3D glasses:
Attached Image
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Herobrine
post Oct 23 2015, 06:25 PM
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Here's a full list of LORRI images published in SOC today. The dump was about 10 minutes ago.
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_1.jpg identified as 'PC_MULTI_MAP_B_18_02_L1', described as '4 Charon LORRI', published at 2015-10-23T18:17:00 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_1.jpg identified as 'PC_MULTI_MAP_B_18_02_L1', described as '4 Charon LORRI', published at 2015-10-23T18:16:56 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_1.jpg identified as 'PC_MULTI_MAP_B_18_02_L1', described as '4 Charon LORRI', published at 2015-10-23T18:16:50 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_1.jpg identified as 'PC_MULTI_MAP_B_17_01_L1', described as '4 Pluto LORRI', published at 2015-10-23T18:16:17 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_1.jpg identified as 'PC_MULTI_MAP_B_17_01_L1', described as '4 Pluto LORRI', published at 2015-10-23T18:16:13 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_1.jpg identified as 'PC_MULTI_MAP_B_17_01_L1', described as '4 Pluto LORRI', published at 2015-10-23T18:16:08 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_1.jpg identified as 'PC_MULTI_MAP_B_17_01_L1', described as '4 Pluto LORRI', published at 2015-10-23T18:16:03 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_1.jpg identified as 'U_TBD_2_L1', published at 2015-10-23T18:18:52 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_1.jpg identified as 'U_TBD_2_L1', published at 2015-10-23T18:18:34 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_1.jpg identified as 'U_TBD_2_L1', published at 2015-10-23T18:18:41 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_1.jpg identified as 'U_TBD_2_L1', published at 2015-10-23T18:18:47 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_4.jpg identified as 'P_MPAN_1', described as 'LORRI Ride-Along', published at 2015-10-23T18:15:11 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_4.jpg identified as 'P_MPAN_1', described as 'LORRI Ride-Along', published at 2015-10-23T18:15:16 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_4.jpg identified as 'P_MPAN_1', described as 'LORRI Ride-Along', published at 2015-10-23T18:15:06 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_4.jpg identified as 'P_MPAN_1', described as 'LORRI Ride-Along', published at 2015-10-23T18:15:02 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_4.jpg identified as 'P_MPAN_1', described as 'LORRI Ride-Along', published at 2015-10-23T18:14:56 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_4.jpg identified as 'P_MPAN_1', described as 'LORRI Ride-Along', published at 2015-10-23T18:14:50 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x630_sci_4.jpg identified as 'P_MPAN_1', described as 'LORRI Ride-Along', published at 2015-10-23T18:14:46 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x636_sci_3.jpg identified as 'P_LEISA_HIRES_L1', described as 'LORRI Portion', published at 2015-10-23T18:14:41 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x636_sci_3.jpg identified as 'P_LEISA_HIRES_L1', described as 'LORRI Portion', published at 2015-10-23T18:14:37 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x636_sci_3.jpg identified as 'P_LEISA_HIRES_L1', described as 'LORRI Portion', published at 2015-10-23T18:14:29 UTC
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x636_sci_3.jpg identified as 'N_LEISA_LORRI_BEST', described as 'LORRI Portion', published at 2015-10-23T18:14:25 UTC
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Herobrine
post Oct 23 2015, 07:06 PM
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Here's a hand stitch of (only) the latest additions to P_MPAN.

(Click for full size, 4829x1082, 2.7 MiB)
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peter59
post Oct 23 2015, 07:40 PM
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I had great expectations associated with observations set identified as P_LEISA_HIRES (23 images made from range about 56000 km). These three images confirmed that expectations were justified. It would be expected that the exposure time for this observation set will be less than 150 milliseconds, but significantly longer than 10 milliseconds. Images captured with the exposure time 50 msec are excellent. I will be impatiently wait for the remaining twenty images. Probably we will have to wait at least three weeks.
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x636_sci_3.jpg identified as 'P_LEISA_HIRES_L1', described as 'LORRI Portion',
This whole mission exceeds all my expectations and all previous imaginations.

FYI, your links don't work. It seems the "..." is in the actual links, so they don't go through. - Moderator.


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http://members.tripod.com/petermasek/marinerall.html
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alan
post Oct 23 2015, 07:41 PM
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Some of the craters are brighter at ~5 o'clock in the this image:
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x636_sci_3.jpg
some specular reflection?
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